Handle SIGINT via async-exit-hook (closes DevExpress#1378) (DevExpres…

…s#1576)

* Handle SIGINT via async-exit-hook (closes DevExpress#1378)

* Use updated package

* Fix typo

* Add message

package.json

@@ -54,6 +54,7 @@
     "prepublish": "publish-please guard"
   },
   "dependencies": {
+    "async-exit-hook": "^1.1.2",
     "babel-core": "^6.22.1",
     "babel-plugin-transform-class-properties": "^6.24.1",
     "babel-plugin-transform-runtime": "^6.22.0",
@@ -78,7 +79,7 @@
     "is-ci": "^1.0.10",
     "is-glob": "^2.0.1",
     "lodash": "^4.13.1",
-    "log-update": "^1.0.2",
+    "log-update-async-hook": "^2.0.2",
     "map-reverse": "^1.0.1",
     "mkdirp": "^0.5.1",
     "moment": "^2.10.3",

src/browser/connection/gateway.js

@@ -75,8 +75,9 @@ export default class BrowserConnectionGateway {
 
     static onHeartbeat (req, res, connection) {
         if (BrowserConnectionGateway.ensureConnectionReady(res, connection)) {
-            connection.heartbeat();
-            res.end();
+            var status = connection.heartbeat();
+
+            respondWithJSON(res, status);
         }
     }
 

src/browser/connection/index.js

@@ -7,6 +7,7 @@ import { readSync as read } from 'read-file-relative';
 import promisifyEvent from 'promisify-event';
 import shortId from 'shortid';
 import COMMAND from './command';
+import STATUS from './status';
 import { GeneralError } from '../../errors/runtime';
 import MESSAGE from '../../errors/runtime/message';
 
@@ -36,6 +37,7 @@ export default class BrowserConnection extends EventEmitter {
         this.provider = browserInfo.provider;
 
         this.permanent        = permanent;
+        this.closing          = false;
         this.closed           = false;
         this.ready            = false;
         this.opened           = false;
@@ -164,9 +166,11 @@ export default class BrowserConnection extends EventEmitter {
     }
 
     close () {
-        if (this.closed)
+        if (this.closed || this.closing)
             return;
 
+        this.closing = true;
+
         this._closeBrowser()
             .then(() => {
                 this.browserConnectionGateway.stopServingConnection(this);
@@ -193,6 +197,11 @@ export default class BrowserConnection extends EventEmitter {
     heartbeat () {
         clearTimeout(this.heartbeatTimeout);
         this._waitForHeartbeat();
+
+        return {
+            code: this.closing ? STATUS.closing : STATUS.ok,
+            url:  this.closing ? this.idleUrl : ''
+        };
     }
 
     renderIdlePage () {

src/browser/connection/status.js

@@ -0,0 +1,4 @@
+export default {
+    ok:      'ok',
+    closing: 'closing'
+};

src/cli/index.js

@@ -1,5 +1,6 @@
 import chalk from 'chalk';
 import resolveCwd from 'resolve-cwd';
+import setupExitHook from 'async-exit-hook';
 import browserProviderPool from '../browser/provider/pool';
 import { GeneralError, APIError } from '../errors/runtime';
 import MESSAGE from '../errors/runtime/message';
@@ -8,6 +9,18 @@ import log from './log';
 import remotesWizard from './remotes-wizard';
 import createTestCafe from '../';
 
+
+var showMessageOnExit = true;
+
+function exitHandler () {
+    if (!showMessageOnExit)
+        return;
+
+    log.hideSpinner();
+    log.write('Stopping TestCafe...');
+    log.showSpinner();
+}
+
 function exit (code) {
     log.hideSpinner();
 
@@ -70,6 +83,7 @@ async function runTests (argParser) {
     }
 
     finally {
+        showMessageOnExit = false;
         await testCafe.close();
     }
 
@@ -115,6 +129,8 @@ function useLocalInstallation () {
     if (useLocalInstallation())
         return;
 
+    setupExitHook(exitHandler);
+
     try {
         var argParser = new CliArgumentParser();
 
@@ -126,6 +142,7 @@ function useLocalInstallation () {
             await runTests(argParser);
     }
     catch (err) {
+        showMessageOnExit = false;
         error(err);
     }
 })();

src/cli/log.js

@@ -1,6 +1,6 @@
 import tty from 'tty';
 import elegantSpinner from 'elegant-spinner';
-import logUpdate from 'log-update';
+import logUpdate from 'log-update-async-hook';
 import chalk from 'chalk';
 import isCI from 'is-ci';
 

src/client/browser/index.js

@@ -1,9 +1,10 @@
 // TODO: once we'll have client commons load it from there instead of node modules (currently it's leads to two copies of this packages on client)
 import Promise from 'pinkie';
 import COMMAND from '../../browser/connection/command';
+import STATUS from '../../browser/connection/status';
 
 
-const HEARTBEAT_INTERVAL = 30 * 1000;
+const HEARTBEAT_INTERVAL = 2 * 1000;
 
 var allowInitScriptExecution = false;
 
@@ -36,9 +37,19 @@ function isCurrentLocation (url) {
 
 //API
 export function startHeartbeat (heartbeatUrl, createXHR) {
-    sendXHR(heartbeatUrl, createXHR);
-
-    window.setInterval(() => sendXHR(heartbeatUrl, createXHR), HEARTBEAT_INTERVAL);
+    function heartbeat () {
+        sendXHR(heartbeatUrl, createXHR)
+            .then(status => {
+                if (status.code === STATUS.closing && !isCurrentLocation(status.url)) {
+                    stopInitScriptExecution();
+                    document.location = status.url;
+                }
+            });
+    }
+
+    window.setInterval(heartbeat, HEARTBEAT_INTERVAL);
+
+    heartbeat();
 }
 
 function executeInitScript (initScriptUrl, createXHR) {

src/index.js

@@ -1,6 +1,7 @@
 import Promise from 'pinkie';
 import TestCafe from './testcafe';
 import * as endpointUtils from 'endpoint-utils';
+import setupExitHook from 'async-exit-hook';
 import { GeneralError } from './errors/runtime';
 import MESSAGE from './errors/runtime/message';
 import embeddingUtils from './embedding-utils';
@@ -42,7 +43,11 @@ async function createTestCafe (hostname, port1, port2) {
         getValidPort(port2)
     ]);
 
-    return new TestCafe(hostname, port1, port2);
+    var testcafe = new TestCafe(hostname, port1, port2);
+
+    setupExitHook(cb => testcafe.close().then(cb));
+
+    return testcafe;
 }
 
 // Embedding utils

src/testcafe.js

@@ -19,6 +19,7 @@ const FAVICON           = read('./client/ui/favicon.ico', true);
 
 export default class TestCafe {
     constructor (hostname, port1, port2) {
+        this.closed                   = false;
         this.proxy                    = new Proxy(hostname, port1, port2);
         this.browserConnectionGateway = new BrowserConnectionGateway(this.proxy);
         this.runners                  = [];
@@ -62,6 +63,11 @@ export default class TestCafe {
     }
 
     async close () {
+        if (this.closed)
+            return;
+
+        this.closed = true;
+
         await Promise.all(this.runners.map(runner => runner.stop()));
 
         await browserProviderPool.dispose();